.showImg{
  width: 295rpx; height: 413rpx;
}
.showImg2{
  position:absolute;top:-9999px;left:-9999px;
  width: 295px; height: 413px;
}
.bgred{
  background: green;
}
.copyCanvas{
  width: 295rpx;
  height: 413rpx;
}
.my_canvas{
  width: 295rpx;
  height: 413rpx;
}